Road scraping, grading, and ditching machine.



G. R. COOK.

ROAD SCRAPING, GRADING, AND DITCHING MACHINE.

APPLICATION FILED AUG-25, l9]?- 1,265,702. Patented May 7,1918.

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G. R. COOK.

ROAD SCRAPING GRADING, AND DITCHING MACHINE.

7 APPLICATION FILED Aue.25. 1911.

1,265,702. Patented May 7,1918.

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M22 '1 a 7 a M A? y avwentoz eo iiqejifiafi TJ'NTTED TATE PATENT @FFTQE,

GEORGE RTCOOK, 0F CABROLLTON, GEORGIA, ASSIGNOR OF ONE-HALF TO JAMES B. F DIAL, OF GABRGLL'ION, GEORGIA.

ROAD SGRAPING, GRADING, AND DITCHING MACHINE.

Specification of Letters Patent.

Patented May 7, 1918.

Application filed August 25, 1917. Serial No. 188,178.

To all whom it may concern:

Be it known that I, GEORGE R. 0001:, a citizen of the United States, residing at Carrollton, in the county of Carroll and State of Georgia, have invented new and useful Improvements in Road Scraping, Grading, and Ditching Machines, of which the following is a specification.

This invention relates to road scrapers or graders and ditchers, and the main object of the invention is to so organize machines of this class and to provide such an organization that the operation of scraping and grading may be effectively accomplished and ditches readily and practically formed with convenience in the manipulation of the machine. A further object of the invention is to provide a draft bar which has a rigid connection between the same and the runner or slide and clear of the outer working side or surface of the latter to hold the said runner or slide close up to the bank with material advantages in ditching operations, and also to apply and transfer. the draft forces to different parts of the machine to insure a positive drawing movement and a more even distribution of the draft strain. A further object of the invention is to facilitate the operation of the machine by providing the runner or slide and blade or share with double points and working edges so that the machine may be overturned and be caused to retrace or return over the ground surface or in ditches without requiring a turning movement thereof in a horizontal plane and thereby permit the machine to be used with particular advantage on comparatively narrow roadways or within spaces confined in width. A still further object of the invention is to provide simple and strong and durable means for connecting and in part adjustably associating the several components of the machine, and so shape the runner or slide and scraping blade or share that they will hold well to the work and move evenly and smoothly without rollers or analogous devices with material reduction in the cost of construction of machines of this class.

The invention consists in the construction and arrangement of the several parts which will be more fully hereinafter described and claimed.

In the drawings I Figure l is a perspective view of a maslide 6 and a draft bar 7. The share or blade 5 has a concavo-convex contour in cross section with the concave 8 outside. The share or blade 5 has upper and lower similar edges 9 and 10 and also upper and lower points 11 and 12 which are, adapted to serve as cutting means and project beyond or in advance of the front end of the said share or blade and separated by a space 13, the said points being concavo-convex and are removably bolted to the share or blade, as at 14-. The slide 6 is flat and vertically straight, the upper and lower edges 15 and 16 being similarly outwardly deflected at an angle to form working edges which are also longitudinally straight. The forward end of the runner is rolled to form knuckles or cuffs 17 which are disposed between upper and lower knuckles or cuffs 18'secured to the inner side of the front end of the blade or share to form .a hinge joint connection by means of a pintle bolt 19 inserted through and secured in the said knuckles or ends. By means of the hinge connection just explained the blade or share 5 may be adjusted as desired relatively to the runner or Slide 6, and to maintain the adjustment thereof the inner side of the runner is provided with a central horizontally disposed keeper or catch bar 20 with a plurality of longitudinally disposed openings 21 therein to adjustably receive acoupling or adjusting bolt 22 inserted through the end of a connecting rod 23 pivoted at its opposite end to a boss or lug 24 fixed to the inner side of the share 5. The draft bar 7 consists of a flat strip of suitable length and thickness formed with a plurality of holes 2% for adjustable attachment thereto of a draft device or means by which the machine is pulled or drawn as desired. The inner end of this draft bar 7 has knuckle 25 which is to its outer end and curved rearwardly beyond the rear end the share 5, and then returned in a curved plane to about the center of the inner side of said share 3, where it is firmly secured. The rod fully clears the outer working side of the share 5, and does not in the least interfere with the move: ment of the dirtover the said share in view of the fact that said rod passes around and atdistance from the rear end of said share and i secured to the inner side of the share The draft rod 26 operates to steady the are and holds said share reliably and posit *ely up to the wori-t, and thereby an advantageous guiding and truing action ensues when a cut is made by the points ll and Furthermore, the rod stands f ar enough away from the outer working side of the share to avoid the least interference with the operation of the share.

The improved machine may be readily overturned or reversed by detaching the draft coupling or means from the bar 7 and subsequently re-attaching the said coupling or means to the bar. This provision of re versible use of the machine will permit operation thereof without turning the machine or detracting from its efliciency, as both points '11 and '12 and the upper and lower edges of the runner or slide 6 and blade or share 5 are equally serviceable in performing their intended functions and thereby the wearing qualities of the machine are also increased. It will be understood, however, that the machine may be turned in the usual manner in performing certain work therewith as desired. it will be seen therefore, that the improved machine has a great range of application and convenience in its oper ation. The parts thereof are few in numher and may be readily assembledand, moreover, the machine may be easily transported.

itwill be seen that the rod 26 provides a rigid connection'between the draft bar '7 and an intermediate portion of the inner side of the share or blade 5 at a point close to the attachment of the rigid adjusting connecting rod 23 also secured to the runner or slide 6. The rod 26 also extends in rear of and entirely clears the rear end of the share or blade 5, and there are no attached devices at any point along the outer working face of said share or blade. The rigid rod 26 serves to apply the draft or pull from the bar 7 to the share or blade and the runner substantially equally through the rod 23, and relieves both the share or blade and the runner of the least draft strain at the rear extremities thereof and thereby also disposes and distributes the draft strain to the best advantage to materially overcome resistance to movement during the forward drag of the share or blade and runner. lt will also be seen that the draft bar 7 is rigid and has its rear edge crossing over and in contacting rename tion connection of this rod through the medium of the rigid adjusting rod enables a quick and positive turning action of the entire scraper or ditching machine within a corn paratively small area as there will be no rearward slackening or lost backing draft of and through the draft bar 7 and rod 26 when rearward stress is imposed thereon, as would be the case in the use of chain C011. nections in similar applications. A still further advantage of the foregoing attachments is that the use of heavy and cumbersome frame bars and beamsis avoided, and at the same time the requisite strength and durability in machines of this type are maintained and preserved.

What is claimed is 1. if road scraping, grading and ditching machine comprising a blade, a runner movably connected at its front end to the front end of said blade, the blade and runner both having upper and lower working edges and the blade provided in addition with upper and lower pointsat its front end, a laterallyextending rigid draft bar connected to the front end of the runner and extending across in contacting adjacency to the front end of the blade, a rigid connecting rod adjust'ably extending across from the inner side of the runner to the inner side of the blade, and a rigid rod adjustably connected to the draft bar and extending rearwardly clear of and around the rear end of the blade and attached to an intermediate portion of the inner side of the latter close to the point of engagement therewith of the adjusting rod and whereby a rigid connection is provided between the draft bar and the. inner side of the blade and the runner.

2. A road scraping, grading and ditching machine comprising a blade and a runne in'ovably connected to each other at their front ends, a rigid draft bar connected to the front end of the runner and extending across the front end of the blade, and rigid connecting means between the draftbar and the intermediate inner opposing side portions of the blade and runner, the saiddraft means entirely clearing the working side of the blade and the rear end of the latter.

3. A road scraping, grading and ditching machine having a blade and runner hingedly connected at their front ends and both provided with upper and lower working edges for reverse use, the blade also having upper and lower points projecting beyond its front end, rigid adjusting means intermediately connecting the inner opposing sides of the blade and runner, a draft bar connected to the front end of the runner and extending across the intermediate portion of the front edge of the blade in contacting re lation to the latter, and a rigid rod adjustably connected to the rigid draft bar at its forward end and extending rearwardly beyond and entirely clearing the rear end of the blade in curved contour and returning between the blade and runner and attached to an intermediate portion of the blade to rigidly apply and equally distribute the draft strain both in forward and rearward directions to the intermediate portions of the blade and runner and also providing a clearance of the outer working side of the 1.

blade and the rear end of the latter of any attached devices.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. G. 

